Governors of both parties have promoted education reform, but so far no one has delivered more than Louisiana’s Bobby Jindal. This week he’ll sign two bills that offer a national model for competition and parental choice.

Louisiana’s new laws will essentially give all parents an average of $8,500 to use for their child’s education as they see fit. They can keep their child in their local public school, but they can also try to get Johnny into a more demanding charter school, or a virtual school, or into special language or career-training courses, among other options.

Nearly 400,000 low-income children–a bit more than half of all students–will also be eligible for vouchers to attend private schools. State officials estimate that about 2,000 students will use vouchers this September given private-school capacity limits, but that tens of thousands will do so over time.

Louisiana is also making life easier for charter schools, with new authorizing boards, a fast-track for high-performing networks, and access to facilities equal to that of traditional public schools. The new laws seek to strengthen superintendents and principals over local school boards, which are bastions of bureaucratic and union intransigence.

Nearly as dramatic are reforms in teacher tenure. To earn tenure, teachers will now have to rate in the top 10% (measured in part by student performance) for five of six consecutive years, and any teacher who falls into the bottom 10% loses tenure. No teacher in the bottom 10% can get a raise, while layoffs will no longer hit the junior-most teachers first while ignoring performance.

Mr. Jindal made school reform a second-term priority after winning a landslide re-election last November. By then he had appointed or helped elect reformers to the state superintendent’s office and board of education.

Louisiana voters also had a preview of reform’s potential. Since Hurricane Katrina in 2005, New Orleans schools have become almost exclusively charters–with dramatic academic improvements–and the city has run a small and oversubscribed voucher program since 2008. As for tenure, the reforms attach consequences to a teacher-evaluation system enacted in 2010.

The result: the reforms attracted bipartisan legislative majorities of roughly 60%. Over four votes (two different bills, each having to pass the House and Senate), one-quarter to one-half of Democrats voted for reform, including many black representatives, especially those from New Orleans.

Teachers unions were predictably opposed and even heavier-handed than usual. Michael Walker Jones of the Louisiana Association of Educators dismissed choice on grounds that “If I’m a parent in poverty I have no clue because I’m trying to struggle and live day to day.” Unions pushed principals to cancel school–sometimes giving parents less than 24 hours notice–so teachers could protest at the state Capitol. It was a tired act.

Mr. Jindal joins Indiana’s Mitch Daniels in passing the most far-reaching school reforms, and now they’ll have to follow through to produce better student outcomes. Unions will seize on any troubles as a sign of failure, but success might catalyze similar reforms across the country that could finally improve the life prospects for all American children.

“House and Senate Appropriators this week ignored the wishes of D.C.’s mayor, D.C.’s public schools chancellor, a majority of D.C.’s city council, and more than 70 percent of D.C. residents and have mandated the slow death of the D.C. Opportunity Scholarship Program. This successful school voucher program–for D.C.’s poorest families–has allowed more than 3,300 children to attend the best schools they have ever known.

The decision to end the program, a decision buried in a thousand-page spending bill and announced right before the holidays, destroys the hopes and dreams of thousands of D.C. families. Parents and children have rallied countless times over the past year in support of reauthorization and in favor of strengthening the OSP.

Yet, despite the clearly positive results and the proven success of this program, Sen. Dick Durbin, Rep. Jose Serrano, Del. Eleanor Holmes Norton, and Secretary Arne Duncan worked together to kill the OSP. Funding the program only for existing children shrinks the program each year, compromises the federal evaluation of the program, denies entry to the siblings of existing participants, and punishes those children waiting in line by sentencing them to failing and often unsafe schools.

What is incredibly disappointing to low-income families in Washington, D.C. has been the silence of President Barack Obama. The President, who benefited from K-12 scholarships himself, worked on behalf of low-income families in Chicago, and exercises school choice as a parent, has stood silently on the sidelines while his Secretary of Education belittled the importance of helping such a small number of children in the nation’s capital.”

In a study published last year, Patrick Wolf of the University of Arkansas found that voucher recipients had graduation rates of 91%. That’s significantly higher than the D.C. public school average (56%) and the graduation rate for students who applied for a D.C. voucher but didn’t win the lottery (70%). In testimony before a Senate subcommittee in February, Mr. Wolf said that “we can be more than 99% confident that access to school choice through the Opportunity Scholarship Program, and not mere statistical noise, was the reason why OSP students graduated at these higher rates.”

The administration downplays these findings. But the students who attend D.C. public schools are overwhelmingly black and poor, and the achievement gap has a particularly devastating impact on their communities. High school dropouts are eight times more likely than someone with a diploma to wind up behind bars. Some 60% of black male high school dropouts in their 30s have prison records. And nearly one in four young black male dropouts is in jail or juvenile detention.

Mr. Obama says he wants to help all students–not just the lucky few who receive vouchers. But that’s an argument for offering more vouchers to those in need, not for reducing school choice. Policies ought to be weighed against available alternatives, not some unattainable ideal. The alternative to a voucher for families in D.C. ghettos and elsewhere is too often a substandard public school.

The positive effects of the D.C. voucher program are not unique. A recent study of Milwaukee’s older and larger voucher program found that 94% of students who stayed in the program throughout high school graduated, versus just 75% of students in Milwaukee’s traditional public schools. And contrary to the claim that vouchers hurt public schools, the report found that students at Milwaukee public schools “are performing at somewhat higher levels as a result of competitive pressure from the school voucher program.” Thus can vouchers benefit even the children that don’t receive them.

Research gathered by Greg Forster of the Foundation for Educational Choice also calls into question the White House assertion that vouchers are ineffective. In a paper released in March, he says that “every empirical study ever conducted in Milwaukee, Florida, Ohio, Texas, Maine and Vermont finds that voucher programs in those places improved public schools.” Mr. Forster surveyed 10 empirical studies that use “random assignment, the gold standard of social science,” to assure that the groups being compared are as similar as possible. “Nine [of the 10] studies find that vouchers improve student outcomes, six that all students benefit and three that some benefit and some are not affected,” he writes. “One study finds no visible impact. None of these studies finds a negative impact.”

Such results might influence the thinking of an objective observer primarily interested in doing right by the nation’s poor children. But they are unlikely to sway a politician focused on getting re-elected with the help of teachers unions.

Republicans think that children do better when their parents can choose a school that produces results. Republicans are the evidence-based party – they do what works. Democrats do whatever it takes to please their special interest groups so they can get re-elected.